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  <title>Document</title>
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  <script>
    const SCHOOL = "shangguigu"
    //1.一定要赋初始值
    const A = 50
    //2.一般大写
    const B = 100
    //3.常量不能修改
    // SCHOOL = 'ATGUIGU'
    //4.块级作用域
    {
      const PLAYER = 'UZI'
    }
    // console.log(PLAYER)
    //5.对于数组和对象元素的修改，不算做对常量的修改 不会报错
    const TEAM = ['UZI','ZBJ','SWK']
    TEAM.push('bgj')
  </script>
</body>
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